#37AA04
Closest named color: Kelly Green (#02AB2E). oklch(64.8% 0.206 139.8), rgb(55, 170, 4).
Aa
Black text reads best on this color (6.91:1).
About this color
#37AA04 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.206 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.019 away. Black text reads best on it, at 6.91:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.206) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #37AA04 |
| RGB | rgb(55, 170, 4) |
| HSL | hsl(102, 95%, 34%) |
| OKLCH | oklch(64.8% 0.206 139.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #37AA04 | 3.03:1 | AA large text | Lc -62.0 | Content text, not long reading |
| Black text on #37AA04 | 6.91:1 | AA | Lc 47.4 | Large or bold text, headings |
| #37AA04 text on white | 3.03:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #37AA04 text on black | 6.91:1 | AA | Lc -45.2 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E0EFDD
oklch(93.6% 0.029 140.5)
-
Step 200
200
#C6E3C0
oklch(88.5% 0.056 140.3)
-
Step 300
300
#9ED192
oklch(80.9% 0.101 139.7)
-
Step 400
400
#65B851
oklch(70.7% 0.162 139.8)
-
Step 500
500 (this color)
#37AA04
oklch(64.8% 0.206 139.8)
-
Step 600
600
#2A8A00
oklch(55.5% 0.178 139.8)
-
Step 700
700
#227400
oklch(49% 0.157 139.8)
-
Step 800
800
#1A5F00
oklch(42.6% 0.136 139.8)
-
Step 900
900
#155000
oklch(37.8% 0.121 139.7)
-
Step 950
950
#0A3001
oklch(27.2% 0.085 139.8)
#37AA04 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #AF9900 | 0.140 |
| Deuteranopia (no green cones) | #A29124 | 0.136 |
| Tritanopia (no blue cones) | #23A490 | 0.140 |
| Achromatopsia (no color) | #949494 | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AA04
#37AA04
oklch(64.8% 0.206 139.8)
- #C35ADB
#C35ADB
oklch(64.7% 0.207 319.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #37AA04, closest first.
No curated palette has a color within ΔE 0.04 of #37AA04.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.019
- Leaf Green #5CA904 ΔE 0.028
- Grass #5CAC2D ΔE 0.037
- Medium Green #39AD48 ΔE 0.039
- Grassy Green #419C03 ΔE 0.040
- Shamrock #01B44C ΔE 0.042
- Grass Green #3F9B0B ΔE 0.044
- Mid Green #50A747 ΔE 0.049
Use #37AA04 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.